Safety Data Sheet

GAF SDS # 2093
Page 2 of 7
Ingestion:
This product is not intended to be ingested. If ingested, it may
cause temporary irritation to the gastrointestinal (digestive) tract.
Inhalation:
May cause irritation to the respiratory tract.
ACUTE HEALTH HAZARDS:
NIOSH has found that studies of workers exposed to asphalt fumes
have repeatedly found irritation of the serous membranes of the
conjunctivae (eye irritation) and the mucous membranes of the
upper respiratory tract (nasal and throat irritation).
CHRONIC HEALTH HAZARDS:
Studies in humans have found that exposure to respirable
crystalline silica (quartz) can cause silicosis, a fibrosis (scarring) of
the lungs. Silicosis is a serious and irreversible disease; it may be
progressive even after exposure has ceased; it can lead to
disability and death. Human studies also have found that silicosis
is a risk factor for tuberculosis, and that occupational exposure to
respirable crystalline silica is associated with chronic obstructive
pulmonary disease, including bronchitis and emphysema. Some
studies show excess numbers of cases of scleroderma, connective
tissue disorders, lupus, rheumatoid arthritis, chronic kidney
diseases and end-stage kidney disease in workers exposed to
respirable crystalline silica.
CARCINOGENICITY:
IARC has determined that occupational exposure to oxidized
asphalt and its emissions is probably carcinogenic to humans
(Group 2A). IARC concluded that available data from cancer
studies in humans points to an association between exposures to
oxidized asphalts during roofing and lung cancer and tumors in the
upper aero-digestive tract. In addition, IARC found sufficient
evidence of carcinogenicity in experimental animals for extracts and
fume condensates of oxidized asphalts.
NIOSH has concluded that the collective data from human, animal,
genotoxicity and exposure studies provide sufficient evidence that
roofing asphalt fumes are a potential occupational carcinogen.
Occupational exposure to respirable crystalline silica is classified as
a known carcinogen in humans. IARC has determined that
respirable crystalline silica is carcinogenic to humans (Group 1),
based on findings of sufficient evidence of carcinogenicity in both
humans and experimental animals. NTP has classified respirable
crystalline silica as a known human carcinogen based on sufficient
evidence of carcinogenicity from studies in humans indicating a
causal relationship between exposure to respirable crystalline silica
and increased lung cancer rates in workers exposed to crystalline
silica dust. NIOSH has determined that respirable crystalline silica
is a potential occupational carcinogen.
IARC has determined that occupational exposure to Titanium
Dioxide is possibly carcinogenic to humans (Group 2B). IARC
concluded lung tumors were observed in rats following high dose
exposure by inhalation and in female rats exposed by intra-tracheal
instillation. Other studies have shown no tumors in rats following
inhalation exposure and no tumors in mice or rats following oral
exposure.